CN111540961A

CN111540961A - Winding mechanism

Info

Publication number: CN111540961A
Application number: CN202010401165.5A
Authority: CN
Inventors: 胡新荣
Original assignee: Shenzhen Xinyichang Technology Co Ltd
Current assignee: Shenzhen Xinyichang Technology Co Ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-08-14
Anticipated expiration: 2040-05-13
Also published as: CN111540961B

Abstract

The application provides a winding group mechanism, including frame, book needle subassembly, rotating turret, pivot subassembly, pivot drive assembly, narrowing unit, play needle unit, rubberizing keep off needle subassembly and rotating turret drive assembly. According to the battery cell winding machine, the rotating frame can be driven to rotate through the rotating frame driving assembly, so that the winding needle assembly can be driven to circularly pass through the narrowing unit, the needle outlet unit and the rubberizing needle blocking assembly, position conversion among a plurality of stations is realized, the rotating shaft assembly and the winding needle assembly are driven to rotate through the rotating shaft driving assembly, and a diaphragm and a pole piece can be wound and formed into a battery cell; the needle withdrawing unit and the needle discharging unit can realize the needle discharging and retracting operation of the needle winding assembly, and realize the functions of clamping the diaphragm and removing the battery cell; the rotating shaft component can be resisted through the rubberizing needle blocking component, and the movement of the rotating shaft component during rubberizing can be avoided. Therefore, the winding set mechanism can realize multi-station position adjustment and multi-station operation of the winding needle assembly, so that the working time of each station is shortened, and the preparation efficiency of the battery cell is improved.

Description

Winding mechanism

Technical Field

The application belongs to the technical field of lithium battery manufacturing, more specifically relates to a winding device for preparing a square lithium battery, in particular to a winding set mechanism.

Background

In the technical field of lithium battery processing, a battery core is an important component for determining the quality of a lithium battery. The battery core is formed by clamping a diaphragm through a winding needle assembly and winding the pole pieces together, and the winding needle assembly takes down the wound battery core during narrowing. Because a plurality of actions such as needle withdrawing, winding, narrowing are required to be completed to the coil needle assembly, the work of the coil needle assembly at each station is long in time consumption, the efficiency of preparing the battery cell is low, and the market demand cannot be met.

Disclosure of Invention

An object of the embodiment of the present application is to provide a winding set mechanism to solve the problem that the battery core preparation efficiency existing in the related art is low and the market demand cannot be met.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

the winding set mechanism comprises a rack, a needle rolling assembly for clamping a diaphragm, a rotating frame rotatably mounted on the rack, a rotating shaft assembly for driving the needle rolling assembly to rotate, a rotating shaft driving assembly for driving the rotating shaft assembly to rotate, a needle retracting unit for pulling the rotating shaft assembly to transversely move so as to drive the needle rolling assembly to retract, a needle discharging unit for pushing the rotating shaft assembly to transversely move so as to drive the needle rolling assembly to advance and discharge needles, a rubberizing needle blocking assembly for pushing the rotating shaft assembly, and a rotating frame driving assembly for driving the rotating frame to rotate so as to drive the needle rolling assembly to circularly pass through the needle retracting unit, the needle discharging unit and the rubberizing needle blocking assembly; the needle winding machine is characterized in that the rotating shaft assembly is installed on the rotating frame, one end of the rotating shaft assembly is connected with the needle winding assembly, the other end of the rotating shaft assembly is connected with the rotating shaft driving assembly, the rotating shaft driving assembly retracts the needle unit, the needle discharging unit, the rotating frame driving assembly and the rubberizing needle blocking assembly are installed on the rack respectively, and the needle retracting unit, the needle discharging unit and the rubberizing needle blocking assembly are arranged on the circumferential side of the rotating frame respectively.

The beneficial effect of this application: the rotating frame can be driven to rotate through the rotating frame driving assembly, so that the winding needle assembly can be driven to circularly pass through the narrowing unit, the needle outlet unit and the rubberizing needle blocking assembly, position conversion among a plurality of stations is realized, the rotating shaft assembly and the winding needle assembly are driven to rotate through the rotating shaft driving assembly, and the diaphragm and the pole piece can be wound to form a battery cell; the needle withdrawing unit and the needle discharging unit can realize the needle discharging and retracting operation of the needle winding assembly, and realize the functions of clamping the diaphragm and removing the battery cell; the rotating shaft component can be resisted through the rubberizing needle blocking component, and the movement of the rotating shaft component during rubberizing can be avoided. Therefore, the winding set mechanism can realize multi-station position adjustment and multi-station operation of the winding needle assembly, so that the working time of each station is shortened, the preparation efficiency of the battery cell is improved, and the market demand is met.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a first schematic structural diagram of a winding mechanism according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a winding mechanism according to an embodiment of the present application;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a schematic structural diagram of a connection of a turret, a spindle assembly, a spindle drive assembly, and a winding pin assembly according to an embodiment of the present disclosure;

FIG. 5 is an exploded view of FIG. 4;

FIG. 6 is a schematic structural diagram of a connection of a turret, a spindle assembly and a winding pin assembly according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a turret according to an embodiment of the present disclosure;

FIG. 8 is an exploded view of a spindle drive assembly according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a narrowing unit provided in an embodiment of the present application;

fig. 10 is a schematic structural diagram of a needle discharging unit provided in an embodiment of the present application;

FIG. 11 is a schematic structural view of a rubberized needle guard assembly according to an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a positioning assembly according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of a needle winding assembly according to an embodiment of the present disclosure;

FIG. 14 is a schematic cross-sectional view of a top view of a needle winding assembly provided in an embodiment of the present application;

FIG. 15 is a first cross-sectional view of a front view of a needle winding assembly according to an embodiment of the present disclosure;

FIG. 16 is a second cross-sectional view of a front view of the needle winding assembly provided by the embodiments of the present application;

FIG. 17 is an exploded view of FIG. 13;

fig. 18 is a schematic structural diagram of a movable seat according to an embodiment of the present application;

FIG. 19 is a top view of the base, the connecting plate, the resilient tab and the stop provided in the embodiments of the present application;

FIG. 20 is a first schematic structural view of a second clamping seat according to an embodiment of the present disclosure;

fig. 21 is a second schematic structural view of a second clamping seat according to an embodiment of the present application;

FIG. 22 is an exploded view of a movable needle provided in accordance with an embodiment of the present application;

fig. 23 is an exploded view of a fixing pin according to an embodiment of the present disclosure.

Wherein, in the drawings, the reference numerals are mainly as follows:

1-a fixed seat; 11-a first grip slipper; 110 — a first opening; 12-a second gripper seat; 120-a second opening; 121-a guide groove; 122-a first via; 123-card slot;

2-fixing the needle; 21-fixing the outer needle; 211-a mounting groove; 22-fixing the inner needle; 221-a second rack; 23-an elastic member; 24-fixing the shaping needle;

3-a slide block; 31-a first slider; 32-a second slider;

4-movable needle; 41-movable inner needle; 411-a convex part; 412-a first rack; 42-movable outer needle; 421-a positioning groove; 43-a movable shaping needle;

5-a movable seat; 50-a direction changing assembly; 51-a base; 510-a second via; 511-a third via; 52-a guide bar; 521-shaft sleeve; 53-a positioning rod; 54-a connecting plate; 541-an arc-shaped through hole; 55-an elastic sheet; 56-a stop block;

6-a rotating frame; 61-rotating the support; 611-a first carousel; 612-a second carousel; 613-third turntable; 62-connecting column; 63-a guide rail; 64-a guide block; 65-a fluted disc;

7-a spindle assembly; 71-a rotating shaft; 72-a positioning block; 73-drive sleeve; 74-a groove;

8-a spindle drive assembly; 81-rotating shaft power unit; 82-an output shaft; 83-a transmission belt;

9-retracting and releasing the needle assembly; 91-narrowing unit; 911-narrowing support; 912-retracting the needle; 913-a narrowing screw; 914-narrowing slider; 915-a narrowing drive; 916-narrowing the needle slide; 92-a needle outlet unit; 921-needle out support; 922-needle outlet; 923-needle discharge screw rod; 924-needle out slider; 925-needle out driving piece; 926-needle discharge sliding rail;

10-a turret drive assembly; 101-a gear tooth; 102-a chainring drive unit;

20-a positioning assembly; 201-positioning support; 202-positioning the fork; 203-a fork drive unit;

30-rubberizing needle blocking assembly; 301-needle blocking bracket; 302-gear needle head; 303-needle blocking power unit;

100-a frame; 1001-support plate; 1002-a support frame;

200-winding needle assembly.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present application, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

For convenience of description, three coordinate axes which are mutually vertical in space are defined as an X axis, a Y axis and a Z axis respectively, and meanwhile, the direction along the X axis is longitudinal, the direction along the Y axis is transverse, and the direction along the Z axis is vertical; the X axis and the Y axis are two coordinate axes which are vertical to each other on the same horizontal plane, and the Z axis is a coordinate axis in the vertical direction; the X axis, the Y axis and the Z axis are positioned in space and are mutually vertical, and three planes are respectively an XY plane, a YZ plane and an XZ plane, wherein the XY plane is a horizontal plane, the XZ plane and the YZ plane are vertical planes, and the XZ plane is vertical to the YZ plane. Three axes in space are an X axis, a Y axis and a Z axis, and the three-axis movement in space refers to the movement along three axes which are vertical to each other in space, in particular to the movement along the X axis, the Y axis and the Z axis in space; the planar motion is a motion in the XY plane.

Referring to fig. 1 to 3, a winding set mechanism provided in the present application will now be described. The winding mechanism comprises a rack 100, a needle winding assembly 200 for clamping a septum, a rotating frame 6 rotatably mounted on the rack 100, a rotating shaft assembly 7 for driving the needle winding assembly 200 to rotate, a rotating shaft driving assembly 8 for driving the rotating shaft assembly 7 to rotate, a needle retracting and releasing assembly 9 for driving the rotating shaft assembly 7 to transversely move so as to realize forward and backward needle withdrawing of the needle winding assembly 200 and a rotating frame driving assembly 10 for driving the rotating frame 6 to rotate; the rotating shaft assembly 7 is arranged on the rotating frame 6, one end of the rotating shaft assembly 7 is connected with the needle coiling assembly 200, the other end of the rotating shaft assembly 7 is connected with the rotating shaft driving assembly 8, and the rotating shaft driving assembly 8, the needle collecting and releasing assembly 9 and the rotating frame driving assembly 10 are respectively arranged on the rack 100. Wherein, the quantity of rolling up needle subassembly 200 and pivot subassembly 7 is the one-to-one setting, and the quantity of rolling up needle subassembly 200 and pivot subassembly 7 can be a plurality of to the multistation demand of adaptation in preparation electricity core. In the present application, the number of the needle winding assemblies 200 and the rotating shaft assemblies 7 can be three, so that repeated continuous operation of the three needle winding assemblies 200 among three stations of the needle discharging station, the winding station and the needle retracting station can be realized. Of course, in other embodiments, the number of the winding pin assembly 200 and the spindle assembly 7 may also be adjusted according to actual needs, and is not limited herein.

The needle retracting and releasing assembly 9 comprises a needle retracting unit 91 for pulling the rotating shaft assembly 7 to move transversely to drive the needle rolling assembly 200 to retract needles and a needle discharging unit 92 for pushing the rotating shaft assembly 7 to move transversely to drive the needle rolling assembly 200 to advance and discharge needles; the narrowing unit 91 and the widening unit 92 are respectively mounted on the frame 100. With the structure, at the needle outlet station, the needle outlet unit 92 can push against the rotating shaft 71 of the rotating shaft assembly 7 to drive the needle rolling assembly 200 to advance, so as to facilitate the needle rolling assembly 200 to clamp the septum; in the retracting station, the retracting unit 91 can pull the rotating shaft 71 of the rotating shaft assembly 7 to drive the winding needle assembly 200 to retreat, so that the wound battery cell can be automatically removed from the winding needle assembly 200.

The winding mechanism further comprises a rubberizing needle blocking assembly 30 used for abutting against the rotating shaft assembly 7, and the needle retracting unit 91, the needle discharging unit 92 and the rubberizing needle blocking assembly 30 are respectively arranged on the circumferential side edge of the rotating frame 6. The rubberizing needle blocking assembly 30 comprises a needle blocking bracket 301 arranged on the frame 100, a needle blocking head 302 used for abutting against the rotating shaft 71 of the rotating shaft assembly 7 and a needle blocking power unit 303 used for driving the needle blocking head 302 to approach or depart from the rotating shaft 71 of the rotating shaft assembly 7; the needle blocking head 302 is rotatably mounted on the needle blocking bracket 301, the needle blocking power unit 303 is mounted on the needle blocking bracket 301, and the needle blocking power unit 303 is connected with the needle blocking bracket 301. The needle blocking power unit 303 may be a cylinder, which is not limited herein. This structure, through set up the rubberizing and keep off needle subassembly 30 in coiling station department, after diaphragm and pole piece coiling are electric core, when electric core rubberizing seals, the rubberizing keeps off needle subassembly 30 and can keep off axis of rotation 71, prevents to roll up needle subassembly 200 rearward movement, and then improves the rubberizing effect. Through set up out needle unit 92 in the station department of going out the needle, set up the rubberizing at coiling station department and keep off needle subassembly 30, set up narrowing unit 91 in narrowing station department, can realize the synchronous operation of winding mechanism in three station department, and then can improve the preparation efficiency of electric core.

In one embodiment, the rack 100 includes a support plate 1001 and a support bracket 1002 mounted on the support plate 1001. The rotating frame driving assembly 10, the rubberizing needle blocking assembly 30, the retracting needle assembly 9 and the rotating shaft driving assembly 8 are respectively arranged on the supporting plate 1001; the rotating frame 6 is coaxially and rotatably mounted on the supporting frame 1002.

According to the battery cell, the rotating frame 6 can be driven to rotate through the rotating frame driving assembly 10, so that the winding needle assembly 200 can be driven to circularly pass through the narrowing unit 91, the needle outlet unit 92 and the rubberizing needle blocking assembly 30, position conversion among a plurality of stations is realized, the rotating shaft assembly 7 and the winding needle assembly 200 are driven to rotate through the rotating shaft driving assembly 8, and a diaphragm and a pole piece can be wound and formed into a battery cell; the needle withdrawing unit 91 and the needle withdrawing unit 92 can realize the needle withdrawing and retracting operation of the needle winding assembly 200, and realize the functions of clamping a diaphragm and removing an electric core. Therefore, the winding set mechanism can realize multi-station position adjustment and multi-station operation of the winding needle assembly 200, so that the working time of each station is shortened, the preparation efficiency of the battery cell is improved, and the market demand is met.

In one embodiment, referring to fig. 4, 7 and 8, as a specific embodiment of the winding set mechanism provided by the present application, the rotating frame 6 includes a rotating bracket 61 rotatably mounted on the frame 100 and a connecting column 62 mounted on the rotating bracket 61, a guide rail 63 is mounted on the connecting column 62 along an axial direction of the connecting column 62, and a guide block 64 is mounted on the guide rail 63; the rotating shaft assembly 7 comprises a positioning block 72 mounted on the guide block 64, a rotating shaft 71 rotatably mounted in the positioning block 72, and a transmission sleeve 73 sleeved on the rotating shaft 71, wherein the rotating shaft 71 is provided with a groove 74 along the axial direction of the rotating shaft 71, and a convex strip (not shown) slidably extending into the groove 74 is correspondingly mounted on the inner side wall of the transmission sleeve 73; the drive sleeve 73 is connected to the spindle drive assembly 8. Specifically, the rotating bracket 61 includes a first rotating disk 611 and a second rotating disk 612 rotatably mounted on the frame 100, respectively, and a third rotating disk 613 connected to the second rotating disk 612, and the connecting column 62 connects the first rotating disk 611 and the second rotating disk 612; the distance between the first rotating disk 611 and the second rotating disk 612 is provided for moving the positioning block 72 and the guiding block 64. One end of the transmission sleeve 73 is rotatably mounted on the second turntable 612, the other end is rotatably mounted on the third turntable 613, and the rotating shaft 71 can move transversely in the transmission sleeve 73, so as to realize needle withdrawing and needle withdrawing of the needle winding assembly 200. Compared with the traditional guide structure of a guide rod and a sliding sleeve, the guide block 64 drives the positioning block 72 and the rotating shaft 71 to transversely position and move through the guide rail 63, so that the transverse movement accuracy of the needle rolling assembly 200 is improved, the action deviation error is small, and the phenomena of blocking and the like are not easily caused. The reliability of the transverse movement of the rotating shaft 71 can be improved through the positioning and guiding of the grooves 74 and the convex strips; moreover, when the rotating shaft driving assembly 8 drives the transmission sleeve 73 to rotate, the transmission sleeve 73 can drive the rotating shaft 71 to rotate through the raised line, and further drive the winding needle assembly 200 to rotate, so that the winding molding of the diaphragm and the pole piece is realized.

In one embodiment, referring to fig. 4 and 5, as an embodiment of the winding assembly mechanism provided in the present application, the shaft driving assembly 8 includes a shaft power unit 81 mounted on the frame 100, an output shaft 82 connected to the shaft power unit 81 at one end, and a transmission belt 83 connecting the transmission sleeve 73 and the other end of the output shaft 82. With the structure, when the rotating shaft power unit 81 drives the output shaft 82 to rotate, the output shaft 82 can respectively drive each transmission sleeve 73 to rotate through the transmission belt 83, and then each rotating shaft 71 and the winding needle assembly 200 can be driven to rotate, so that the winding of the diaphragm and the pole piece at the winding station can be realized. The second turntable 612 is rotatably provided with a rotating wheel (not shown) for guiding the driving belt 83 to move, the rotating wheel is provided with a limit groove along the circumferential direction, and the driving belt 83 is arranged in the limit groove. The shaft power unit 81 may be a motor, which is not limited herein. In some embodiments, the shaft drive assembly 8 may be a motor that directly drives rotation of each drive sleeve 73. In still other embodiments, the transmission sleeve 73 and the output shaft 82 may be connected by a plurality of gears that mesh, but are not limited to such.

In one embodiment, referring to fig. 3 and 9, as an embodiment of the winding set mechanism provided by the present application, the narrowing unit 91 includes a narrowing bracket 911 mounted on the frame 100, a narrowing head 912 for pulling the rotating shaft assembly 7 to retract, a narrowing screw 913 rotatably mounted on the narrowing bracket 911, a narrowing slide 914 mounted on the narrowing screw 913, and a narrowing driving member 915 for driving the narrowing screw 913 to rotate; the narrowing drive 915 is mounted on the narrowing bracket 911, the narrowing drive 915 is connected with the narrowing screw rod 913, and the narrowing head 912 is mounted on the narrowing slide block 914. The narrowing bracket 911 is provided with a narrowing slide rail 916 along the length direction thereof, and the narrowing slide block 914 is mounted on the narrowing slide rail 916 to play a role of guiding the narrowing slide block 914 in an oriented manner. The retracting drive 915 may be a motor, and is not limited thereto. This structure, in the station department of narrowing, drives the lead screw 913 that narrows through the driving piece 915 that narrows and rotates, can drive narrowing sliding block 914 and narrowing head 912 backward movement in the lump, and narrowing head 912 catches on the one end of the axis of rotation 71 of narrowing station department, makes axis of rotation 71 backward movement, realizes the narrowing to rolling up needle subassembly 200 to can roll up the automatic fall of electric core after the coiling shaping on needle subassembly 200. After the needle retracting operation is completed, the needle retracting driving member 915 drives the needle retracting head 912 to return to the initial position, so that the subsequent needle retracting operation can be repeated conveniently. In some embodiments, the retracting unit 91 may be a retracting needle 912 and a cylinder driving the retracting needle 912 to reciprocate transversely; alternatively, the retracting unit 91 may be a linear sliding motor, and can also drive the retracting needle 912 to perform a transverse reciprocating motion, which is not limited herein.

In an embodiment, please refer to fig. 3 and 10, as a specific implementation manner of the winding set mechanism provided in the present application, the needle output unit 92 includes a needle output bracket 921 installed on the frame 100, a needle output head 922 for pushing the rotating shaft assembly 7 to advance, a needle output screw rod 923 rotatably installed on the needle output bracket 921, a needle output sliding block 924 installed on the needle output screw rod 923, and a needle output driving member 925 for driving the needle output screw rod 923 to rotate; the needle outlet driving piece 925 is installed on the needle outlet support 921, the needle outlet driving piece 925 is connected with the needle outlet screw rod 923, and the needle outlet head 922 is installed on the needle outlet sliding block 924. The needle discharging support 921 is provided with a needle discharging slide rail 926 along the longitudinal direction thereof, and the needle discharging slide block 924 is mounted on the needle discharging slide rail 926 to perform a directional guiding function for the needle discharging slide block 924. The needle drive member 925 may be a motor, and is not limited herein. This structure, in a needle station department, drives out needle lead screw 923 through a needle driving piece 925 and rotates, can drive a needle sliding block 924 and a needle 922 forward movement in the lump, goes out the needle 922 and supports the one end of the axis of rotation 71 that pushes away needle station department, realizes rolling up the needle that needle subassembly 200 moved forward, the follow-up centre gripping operation to the diaphragm of being convenient for. After the needle is discharged, the needle discharging driving member 925 drives the needle discharging head 922 to return to the initial position, so that subsequent repeated needle discharging operation is facilitated. In some embodiments, the needle discharging unit 92 may be a needle discharging head 922 and a cylinder driving the needle discharging head 922 to reciprocate transversely; alternatively, the needle output unit 92 may be a linear motor, which can also drive the needle output head 922 to perform a transverse reciprocating motion, but is not limited thereto.

In one embodiment, referring to fig. 3 and 7, as an embodiment of the winding assembly mechanism provided in the present application, the rotating frame 6 further includes a toothed disc 65 mounted on the rotating bracket 61; the rotating frame driving assembly 10 comprises a transmission gear 101 meshed with the fluted disc 65 and a fluted disc driving unit 102 for driving the transmission gear 101 to rotate; a toothed disc drive unit 102 is mounted on the frame 100, the toothed disc drive unit 102 being connected to the transmission teeth 101. The fluted disc drive unit 102 may be a motor, which is not limited herein. This structure, when fluted disc drive unit 102 drove driving gear 101 and rotates, can drive the fluted disc 65 rotation with driving gear 101 meshing in the lump, fluted disc 65 can drive the rotating turret 6 and rotate to realize the rotation of each rolling needle subassembly 200, thereby adjustable each rolling needle subassembly 200's position makes rolling needle subassembly 200 at the station of narrowing down, the synchronous operation of each station can be realized to reciprocal rotation between the station of rolling needle and the station of withdrawing needles, and then can improve the preparation efficiency of electric core. In some embodiments, the turret drive assembly 10 may include a motor and a connecting strap connecting the motor to the turret 6, through which the turret 6 may be rotated. In still other embodiments, the turret drive assembly 10 may include a rack and a lead screw drive or linear slide motor for reciprocating the rack, and the rack may be used to rotate the toothed plate 65 and the turret 6, but is not limited thereto.

In one embodiment, referring to fig. 2, 3 and 12, as one embodiment of the winding-set mechanism provided herein, the winding-set mechanism further includes a positioning assembly 20 for limiting rotation of the toothed plate 65; the positioning assembly 20 is mounted to the frame 100. With the structure, the fluted disc 65 is positioned by the positioning component 20, so that the rolling needle component 200 can be prevented from shaking the rotating frame 6 in the processes of needle withdrawing, winding and retracting operations, and the accuracy of the operation of each station can be improved. Specifically, the positioning assembly 20 includes a positioning bracket 201 mounted on the frame 100, a positioning fork 202 for engaging the chainring 65, and a fork drive unit 203 for driving the positioning fork 202 toward or away from the chainring 65; the fork driving unit 203 is mounted on the positioning bracket 201, and the fork driving unit 203 is connected with the positioning fork 202. The fork driving unit 203 may be a cylinder, which is not limited herein. With the structure, when the fork driving unit 203 drives the positioning fork 202 to be meshed with the fluted disc 65, the clamping positioning of two positions of the fluted disc 65 can be realized by matching with the transmission teeth 101, and the swing of the rotating frame 6 can be avoided. In some embodiments, the rotating frame 6 may have a positioning groove, and the positioning component 20 may be an insert and an air cylinder for driving the insert to move, so that when the insert is inserted into the positioning groove, the rotating frame 6 can be positioned. In some embodiments, the rotating frame 6 has a positioning hole, and the positioning assembly 20 may be a positioning rod and a cylinder for driving the positioning rod to move, and when the positioning rod extends into the positioning hole, the positioning rod can abut against the latch on the fluted disc 65, so as to position the rotating frame 6.

In an embodiment, referring to fig. 13 to 15, as a specific implementation of the winding set mechanism provided by the present application, the winding pin assembly 200 includes a fixed seat 1 connected to an end of the rotating shaft assembly 7 away from the rotating shaft driving assembly 8, a fixed pin 2 connected to the fixed seat 1, a slider 3 mounted on the fixed seat 1, a movable pin 4 for clamping a septum in cooperation with the fixed pin 2, and a movable seat 5 mounted on the fixed seat 1 in a transverse sliding manner; the movable seat 5 is provided with a direction changing component 50 which is used for changing the transverse movement into the longitudinal movement so as to push the sliding block 3 to move longitudinally and enable the movable needle 4 to be close to or far away from the fixed needle 2, and the fixed seat 1 is provided with a guide groove 121 for accommodating the sliding block 3 along the longitudinal direction; the movable needle 4 is connected with the sliding block 3, the sliding block 3 is movably connected with the movable seat 5, and the movable seat 5 is movably connected with the fixed seat 1. Wherein the lateral direction is defined as an X-axis direction in fig. 1, which is parallel to the length direction of the fixed needle 2 or the movable needle 4; the longitudinal direction is oriented as the Y-axis direction in fig. 1, which is perpendicular to the length direction of the fixed needle 2 or the movable needle 4. The fixed needle 2 and the movable needle 4 can be arranged in parallel at intervals; the fixed seat 1 can be fixed on other parts, and the movable seat 5 can be pushed by other external parts and can realize reciprocating motion along the X-axis direction. This structure, when the sliding seat 5 received the exogenic action lateral shifting on fixing base 1, can drive slider 3 longitudinal movement through diversion subassembly 50 to can drive movable needle 4 and be close to or keep away from fixed needle 2, realize the centre gripping to the diaphragm. This application is through offering the guide slot 121 that supplies 3 directional movements of slider on fixing base 1 to improve the counterpoint precision of activity needle 4 and fixed needle 2, can effectively improve the centre gripping effect to the diaphragm, and then can improve the quality of electric core and battery. The transverse movement of the movable seat 5 drives the sliding block 3 to move longitudinally through the direction changing component, so that the risk of needle breakage when the movable seat 5 and the sliding block 3 move in the same direction can be reduced; and the winding size range is large, so that the occupied space of the winding needle assembly 200 in the longitudinal direction is reduced. In other embodiments, the moving direction of the movable seat 5 and the moving direction of the sliding block 3 may be adjusted according to actual needs, for example, the moving direction of the movable seat 5 is the same as or opposite to the moving direction of the sliding block 3; or the moving direction of the movable seat 5 is inclined to the moving direction of the slider 3, that is, a component force given to the slider 3 to move in the longitudinal direction when the movable seat 5 moves in the lateral direction, etc., which is not limited herein.

In one embodiment, referring to fig. 17 to 19, the movable seat 5 includes a base 51 and a guide rod 52 for guiding the base 51 to move transversely (i.e., in the X-axis direction of fig. 17), the direction changing assembly 50 includes a connecting plate 54 and a positioning rod 53, the connecting plate 54 is mounted on the base 51, and the connecting plate 54 is provided with an arc-shaped through hole 541 for guiding the positioning rod 53 to move longitudinally; one end of the guide rod 52 is connected with the base 51, the other end of the guide rod 52 extends into the fixed seat 1, one end of the positioning rod 53 is connected with the sliding block 3, and the other end of the positioning rod 53 extends into the arc-shaped through hole 541. The positioning rod 53 can be sleeved with a shaft sleeve to protect the positioning rod 53 and improve the moving reliability of the positioning rod. Specifically, the base 51 is provided with a connecting plate 54 on a side facing the fixed base 1 and along the length direction (i.e., the X-axis direction) of the movable needle 4, and an arc-shaped through hole 541 is opened in the connecting plate 54. The guide rod 52 is arranged along the length direction of the movable needle 4; the guide groove 121 is provided in a direction perpendicular to the length direction (i.e., Y-axis direction) of the movable needle 4. With the structure, when the positioning rod 53 is positioned at one end of the arc-shaped through hole 541, the movable needle 4 is far away from the fixed needle 2, and the needle rolling assembly 200 is in an open state, so that the septum can extend into the space between the movable needle 4 and the fixed needle 2; when the base 51 is acted by an external force, the base 51 moves close to the fixed seat 1 along the length direction (i.e. the X-axis direction) of the movable needle 4 under the action of the guide rod 52, and the movable seat 5 drives the slider 3 to move along the length direction (i.e. the Y-axis direction) perpendicular to the movable needle 4 under the positioning and guiding actions of the arc-shaped through hole 541 and the positioning rod 53. When the positioning rod 53 moves to the other end of the arc-shaped through hole 541, the movable needle 4 is close to the fixed needle 2, and the winding needle assembly 200 is in a closed state, so that the diaphragm is clamped, and the subsequent winding process is facilitated. The sliding block 3 and the movable needle 4 are driven to move along the Y-axis direction by the movement of the movable seat 5 along the X-axis direction, on one hand, the moving direction of the movable seat 5 is the same as the needle withdrawing and withdrawing directions of the needle rolling assembly 200, so that the occupied space in the Y-axis direction can be reduced; on the other hand, the moving accuracy and reliability of the movable needle 4 are improved, the fixed needle 2 and the movable needle 4 are not easy to break, the clamping effect is good, the winding size range is large, and the device can be suitable for preparation of electric cores of different sizes. In some embodiments, the direction changing assembly 50 may be an X-shaped yoke. When the movable seat 5 acts on one side of the X-shaped fork rod along the transverse direction, the two ends of the other side of the X-shaped fork rod can move along the longitudinal direction. In some embodiments, the direction changing assembly 50 may also be a guide rod and guide block structure obliquely arranged in the mold. When the movable seat 5 transversely drives the inclined guide rod to move, the guide rod can drive the guide block to longitudinally move.

In one embodiment, referring to fig. 15 and 19, the direction changing assembly 50 further includes an elastic piece 55 mounted on the connecting plate 54 and a stopper 56 for abutting against the positioning rod 53, the stopper 56 is connected to the elastic piece 55, and the stopper 56 extends into the arc-shaped through hole 541. Specifically, the connecting plate 54 is provided with an elastic piece 55, and the connecting plate 54 is provided with a through hole for the stopper 56 to extend into the arc-shaped through hole 541. The stop 56 may be a ball, and is not limited thereto. With this structure, the stopper 56 and the elastic piece 55 can stop the positioning rod 53, and the slider 3 can be prevented from sliding when no external force is applied. When the movable seat 5 abuts against the sliding block 3, the positioning rod 53 abuts against the stopper 56 outwards, and the elastic piece 55 bounces, so as to contact with the stopper 56 to move from one end of the arc-shaped through hole 541 to the other end.

In an embodiment, referring to fig. 14 and 17, the fixing base 1 includes a first clamping base 11 and a second clamping base 12 connected to the first clamping base 11, the second clamping base 12 is disposed between the first clamping base 11 and the movable base 5, a guide groove 121 is disposed on a side surface of the second clamping base 12 facing the first clamping base 11, a first through hole 122 is disposed on a bottom surface of the guide groove 121, a second through hole 510 for the movable needle 4 to pass through is correspondingly disposed on the movable base 5, the fixed needle 2 is connected to the second clamping base 12, and the movable needle 4 passes through the second through hole 510 and the first through hole 122 to be connected to the slider 3. Specifically, the second through hole 510 is opened on the base 51, and the first opening 110 and the second opening 120 for the guide rod 52 to extend into are respectively opened on the first clamping seat 11 and the second clamping seat 12, so as to realize the movement of the base 51 along the X-axis direction. The guide rod 52 can be sleeved with a shaft sleeve 521, so that the direct friction and abrasion between the guide rod 52 and the fixed seat 1 are reduced, and the guide rod 52 and the fixed seat 1 are protected. With this structure, the slider 3 is clamped and fixed by the first clamping seat 11 and the second clamping seat 12, so that the reliability of the movement of the slider 3 can be improved. The movable needle 4 passes through the first through hole 122 and the second through hole 510 respectively, so that certain avoiding and positioning guiding effects are achieved on the movement of the movable needle 4, and the occupied space of the needle rolling assembly 200 in the Y-axis direction can be reduced.

In one embodiment, referring to fig. 17 and 21, a slot 123 is formed on a side surface of the second holder 12 facing the movable base 5, and one end of the fixed pin 2 is installed in the slot 123. This structure can realize the location dismouting to fixed needle 2 through draw-in groove 123, and then improves the connection precision between fixed needle 2 and the fixing base 1. The card slot 123 is disposed along a direction perpendicular to the guide slot 121 (i.e., a Z-axis direction in fig. 17), and is not limited herein.

In one embodiment, referring to fig. 18 and 21, a third through hole 511 for the fixing pin 2 to pass through is formed on the movable seat 5 at a position corresponding to the slot 123. Specifically, the third through hole 511 is opened on the susceptor 51. With the structure, the fixed needle 2 can pass through the third through hole 511, so that the fixed needle 2 and the movable needle 4 can conveniently open and close the needles in the longitudinal direction. The third through hole 511 communicates with the second through hole 510. The structure is convenient to process and manufacture and high in production efficiency.

In one embodiment, referring to fig. 15, 17 and 18, the slider 3 includes a first slider 31 and a second slider 32 respectively disposed at opposite ends of the guide groove 121, and the movable pin 4 includes a movable inner pin 41 connected to the first slider 31 and a movable outer pin 42 connected to the second slider 32; the base 51 is provided with connecting plates 54 at two opposite ends of the guide groove 121, each connecting plate 54 is provided with an arc-shaped through hole 541, the arc-shaped through holes 541 at two opposite ends of the guide groove 121 are arranged oppositely, each arc-shaped through hole 541 is provided with a positioning rod 53, and the first sliding block 31 and the second sliding block 32 are respectively connected with the positioning rods 53 at the corresponding ends of the guide groove 121. Specifically, the number of the arc-shaped through holes 541 corresponds to the number of the connecting plates 54, the number of the connecting plates 54 may be two, and the two arc-shaped through holes 541 are symmetrically distributed in the middle vertical plane of the plane where the two connecting plates 54 are located, so that the first sliding block 31 and the second sliding block 32 can move in a reverse synchronous manner or in a synchronous manner. In other embodiments, the two arc-shaped through holes 541 may have the same track, and the first sliding block 31 and the second sliding block 32 may also move in the same direction and synchronously; the number, distribution position, etc. of the connection plates 54 can be adjusted according to actual needs, and are not limited herein. With the structure, when the movable seat 5 moves along the X-axis direction through the guide rod 52 under the action of an external force, the first sliding block 31 and the second sliding block 32 can be driven to synchronously move along the Y-axis direction in the opposite direction or in the opposite direction through the two arc-shaped through holes 541 and the two positioning rods 53, so that the synchronous movement in the opposite direction or in the opposite direction of the movable inner needle 41 and the movable outer needle 42 is realized. By arranging the movable inner needle 41 and the movable outer needle 42, the problem of unbalanced clamping force at each position of the diaphragm when one movable needle 4 is used independently can be effectively solved. The movable outer needle 42 pushes against the movable inner needle 41, so that the clamping force for clamping the diaphragm between the movable inner needle 41 and the fixed needle 2 is uniform and consistent, and the clamping effect on the diaphragm can be improved.

In one embodiment, referring to fig. 22, the side of the movable inner needle 41 facing the movable outer needle 42 is provided with a protrusion 411, and the movable outer needle 42 is correspondingly provided with a positioning slot 421 for the protrusion 411 to extend into. With the structure, the matching of the containing groove and the convex part 411 can improve the alignment precision between the movable outer needle 42 and the movable inner needle 41, and is convenient for dismounting the movable needle 4; moreover, the space occupied by the movable needle 4 in the X-axis direction can be reduced. Wherein, the positioning groove 421 is arranged along the length direction of the movable outer needle 42. The side of the movable needle 4 facing the fixed needle 2 is provided with a first rack 412, and the first rack 412 is arranged along the length direction of the movable needle 4. Specifically, the first rack 412 is provided on the side of the movable inner needle 41 facing the fixed needle 2. With the structure, when the movable needle 4 and the fixed needle 2 clamp the diaphragm, the first rack 412 can increase the friction force between the movable needle 4 and the diaphragm, so that the anti-skid effect is achieved, and the clamping effect on the diaphragm is improved. The movable needle 4 further comprises a movable shaped needle 43 mounted on the side of the movable outer needle 42 facing away from the movable inner needle 41, the width of the movable shaped needle 43 gradually decreasing along the movable inner needle 41 in the direction of the movable outer needle 42. This structure, the one end setting with activity design needle 43 is the platykurtic, is convenient for prepare square electric core and square lithium cell. In other embodiments, the movable shaping needle 43 may also have other configurations, such as a plate shape, a circular arc shape, etc., so as to be suitable for the preparation of different types of battery cells and batteries, which is not limited herein.

In one embodiment, referring to fig. 23, the fixed needle 2 comprises a fixed outer needle 21 connected to the fixed base 1 and a fixed inner needle 22 mounted on the side of the fixed outer needle 21 facing the movable needle 4. According to the structure, the fixed inner needle 22 is pushed and supported by the fixed outer needle 21, so that the clamping force of the fixed inner needle 22 and the clamping force of the movable inner needle 41 for clamping the diaphragm are uniform and consistent, and the clamping effect on the diaphragm is further improved. The side of the fixed outer needle 21 facing the movable needle 4 is provided with a mounting groove 211 for accommodating the fixed inner needle 22, and the mounting groove 211 is arranged along the length direction of the fixed outer needle 21. With the structure, the quick positioning disassembly and assembly of the fixed inner needle 22 can be realized through the mounting groove 211; also, the occupation space of the fixing needle 2 in the Y-axis direction can be reduced. The fixing needle 2 further comprises an elastic piece 23 arranged in the mounting groove 211; one end of the elastic member 23 is connected to the fixed inner needle 22, and the other end of the elastic member 23 is connected to the bottom surface of the mounting groove 211. With the structure, when the movable inner needle 41 and the fixed inner needle 22 are matched to clamp the septum, on one hand, the elastic part 23 can push the fixed inner needle 22 to be tightly attached to the septum, and the clamping force of each position of the septum is balanced; on the other hand, the elastic part 23 can play a role in buffering and protecting the fixed inner needle 22, and the phenomenon that the battery cell cannot be discharged due to overlarge clamping force of the diaphragm can be avoided. The elastic member 23 may be a spring, which is not limited herein. The side of the fixed needle 2 facing the movable needle 4 is provided with a second rack 221, and the second rack 221 is arranged along the length direction of the fixed needle 2. Specifically, the second rack 221 is provided on the side of the fixed inner needle 22 facing the movable needle 4. With the structure, when the fixed inner needle 22 and the movable inner needle 41 cooperate to clamp the diaphragm, the first rack 412 and the second rack 221 cooperate to clamp the diaphragm effectively, so that the diaphragm is prevented from falling off.

In one embodiment, referring to fig. 23, the fixed needle 2 further includes a fixed shaped needle 24 installed on a side of the fixed outer needle 21 facing away from the movable needle 4, and a width of the fixed shaped needle 24 is gradually reduced toward the fixed outer needle 21 along the fixed inner needle 22. In the structure, one end of the fixing and shaping needle 24 is flat, so that a square electric core and a square lithium battery can be conveniently prepared. In other embodiments, the fixing and shaping needle 24 may have other configurations, such as a plate shape, a circular arc shape, etc., so as to be suitable for the preparation of different types of battery cells and batteries, which is not limited herein.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The winding mechanism is characterized in that: comprises a frame (100), a needle rolling component (200) for clamping a septum, a rotating frame (6) rotatably arranged on the frame (100), a rotating shaft component (7) for driving the needle rolling component (200) to rotate, and a rotating shaft driving component (8) for driving the rotating shaft component (7) to rotate, a narrowing unit (91) for pulling the rotating shaft assembly (7) to move transversely to drive the needle rolling assembly (200) to retreat and narrow the needle, a needle outlet unit (92) for pushing the rotating shaft assembly (7) to move transversely to drive the needle rolling assembly (200) to advance and discharge the needle, a rubberizing needle blocking assembly (30) for pushing the rotating shaft assembly (7) and a rotating frame driving assembly (10) for driving the rotating frame (6) to rotate to drive the needle rolling assembly (200) to circulate through the narrowing unit (91), the needle outlet unit (92) and the rubberizing needle blocking assembly (30); pivot subassembly (7) install in on rotating turret (6), the one end of pivot subassembly (7) with it links to each other to roll up needle subassembly (200), the other end of pivot subassembly (7) with pivot drive assembly (8) link to each other, pivot drive assembly (8) narrowing unit (91) go out needle unit (92) rotating turret drive assembly (10) with rubberizing keeps off needle subassembly (30) and install respectively in on frame (100), narrowing unit (91) go out needle unit (92) with rubberizing keeps off needle subassembly (30) and locates respectively the side of rotating turret (6) circumference.

2. The winding assembly mechanism of claim 1, wherein: the rotating frame (6) comprises a rotating bracket (61) rotatably mounted on the rack (100) and a connecting column (62) mounted on the rotating bracket (61), a guide rail (63) is mounted on the connecting column (62) along the axial direction of the connecting column (62), and a guide block (64) is mounted on the guide rail (63); the rotating shaft assembly (7) comprises a positioning block (72) arranged on the guide block (64), a rotating shaft (71) rotatably arranged in the positioning block (72) and a transmission sleeve (73) sleeved on the rotating shaft (71), a groove (74) is formed in the rotating shaft (71) along the axial direction of the rotating shaft (71), and a convex strip which extends into the groove (74) in a sliding manner is correspondingly arranged on the inner side wall of the transmission sleeve (73); the transmission sleeve (73) is connected with the rotating shaft driving component (8).

3. The winding assembly mechanism of claim 2, wherein: the rotating frame (6) further comprises a fluted disc (65) arranged on the rotating bracket (61); the rotating frame driving assembly (10) comprises a transmission gear (101) meshed with the fluted disc (65) and a fluted disc driving unit (102) used for driving the transmission gear (101) to rotate; the fluted disc drive unit (102) is installed on the rack (100), and the fluted disc drive unit (102) is connected with the transmission teeth (101).

4. The winding mechanism of claim 3, wherein: the winding mechanism further comprises a positioning assembly (20) for limiting the fluted disc (65) to rotate; the positioning assembly (20) is mounted on the frame (100).

5. The winding mechanism of claim 4, wherein: the positioning assembly (20) comprises a positioning bracket (201) mounted on the frame (100), a positioning fork (202) for engaging with the toothed disc (65), and a fork driving unit (203) for driving the positioning fork (202) to approach or depart from the toothed disc (65); the fork head driving unit (203) is installed on the positioning support (201), and the fork head driving unit (203) is connected with the positioning fork head (202).

6. The winding assembly mechanism of claim 1, wherein: the narrowing unit (91) comprises a narrowing bracket (911) arranged on the rack (100), a narrowing head (912) used for pulling the rotating shaft assembly (7) to retreat so as to narrow the needle of the needle winding assembly (200), a narrowing screw rod (913) rotatably arranged on the narrowing bracket (911), a narrowing slide block (914) arranged on the narrowing screw rod (913), and a narrowing driving piece (915) used for driving the narrowing screw rod (913) to rotate; the narrowing driving piece (915) is installed on the narrowing support (911), the narrowing driving piece (915) is connected with the narrowing screw rod (913), and the narrowing head (912) is installed on the narrowing sliding block (914).

7. The winding assembly mechanism of claim 6, wherein: the narrowing unit (91) also comprises a narrowing slide rail (916) arranged on the narrowing bracket (911); the narrowing slide rail (916) and the narrowing screw rod (913) are arranged in parallel at intervals, and the narrowing slide block (914) is connected with the narrowing slide rail (916).

8. Winding group mechanism according to any of claims 1 to 7, characterized in that: the needle discharging unit (92) comprises a needle discharging support (921) arranged on the rack (100), a needle discharging head (922) used for pushing the rotating shaft assembly (7) to advance so as to enable the needle discharging of the needle rolling assembly (200), a needle discharging screw rod (923) rotatably arranged on the needle discharging support (921), a needle discharging sliding block (924) arranged on the needle discharging screw rod (923), and a needle discharging driving piece (925) used for driving the needle discharging screw rod (923) to rotate; go out needle driving piece (925) install in go out on needle support (921), go out needle driving piece (925) with it links to each other to go out needle lead screw (923), go out syringe needle (922) install in go out on needle sliding block (924).

9. Winding group mechanism according to any of claims 1 to 7, characterized in that: the rubberizing needle blocking assembly (30) comprises a needle blocking bracket (301) arranged on the rack (100), a needle blocking head (302) used for abutting against the rotating shaft assembly (7) and a needle blocking power unit (303) used for driving the needle blocking head (302) to be close to or far away from the rotating shaft assembly (7); keep off needle head (302) install in keep off on needle support (301), keep off needle power pack (303) with keep off needle head (301) and link to each other.

10. Winding group mechanism according to any of claims 1 to 7, characterized in that: the needle rolling assembly (200) comprises a fixed seat (1) connected with one end of the rotating shaft assembly (7) far away from the rotating shaft driving assembly (8), a fixed needle (2) connected with the fixed seat (1), a sliding block (3) arranged on the fixed seat (1), a movable needle (4) connected with the sliding block (3) and a movable seat (5) arranged on the fixed seat (1) in a transverse sliding mode; the movable seat (5) is provided with a direction changing component (50) which is used for changing transverse movement into longitudinal movement so as to push the sliding block (3) to move longitudinally and enable the movable needle (4) to be close to or far away from the fixed needle (2), and the fixed seat (1) is longitudinally provided with a guide groove (121) for accommodating the sliding block (3); the sliding block (3) is movably connected with the movable seat (5), and the movable seat (5) is movably connected with the fixed seat (1).